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Switch-specific and general preparation map onto different ERP components in a task-switching paradigm


Karayanidis, F and Provost, A and Brown, S and Paton, B and Heathcote, A, Switch-specific and general preparation map onto different ERP components in a task-switching paradigm, Psychophysiology: An International Journal, 48 pp. 559-568. ISSN 0048-5772 (2011) [Refereed Article]

Copyright Statement

Copyright 2011 Society for Psychophysiological Research

DOI: doi:10.1111/j.1469-8986.2010.01115.x


We examined whether the cue-locked centroparietal positivity is associated with switch-specific or general preparation processes. If this positivity (300–400 ms) indexes switch-specific preparation, faster switch trials associatedwith smaller RTswitch cost should have a larger positivity as compared to slower switch trials, but no such association should be evident for repeat trials. We extracted ERP waveforms corresponding to semi-deciles of each participant’s RT distribution (i.e., fastest to slowest 5% of trials) for switch and repeat conditions. Consistent with a switch-specific preparation process, centroparietal positivity amplitude was linked to slower RTand larger RTswitch cost for switch but not repeat trials. A later pre-target negativity (500–600 ms) was inversely correlated with RT for both switch and repeat trials, consistent with a general anticipatory preparation processes.

Item Details

Item Type:Refereed Article
Keywords:Advance preparation, Task-switching, RT distribution, Single trial ERP
Research Division:Psychology
Research Group:Cognitive and computational psychology
Research Field:Decision making
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in psychology
UTAS Author:Heathcote, A (Professor Andrew Heathcote)
ID Code:98899
Year Published:2011
Web of Science® Times Cited:71
Deposited By:Medicine
Deposited On:2015-03-06
Last Modified:2017-10-31

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